CN100589461C - Method for inverse multiplexing - Google Patents
Method for inverse multiplexing Download PDFInfo
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- CN100589461C CN100589461C CN02810155A CN02810155A CN100589461C CN 100589461 C CN100589461 C CN 100589461C CN 02810155 A CN02810155 A CN 02810155A CN 02810155 A CN02810155 A CN 02810155A CN 100589461 C CN100589461 C CN 100589461C
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- digital data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/14—Channel dividing arrangements, i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
Abstract
The invention relates to a method for multiplexing digital data, wherein a packet of digital data is simultaneously sent from front to rear and from rear to front. Such a method can be used in cordless telephones, computer networks, such as among others the internet, and other networks of devices wherein digital data are exchanged.
Description
Technical field
The present invention relates to a kind of method and the software that is used for this purpose of multiplexing digital data.
Background technology
In practice, the method that much sends data all is known, especially under the situation via a network.One of them example is the numerical data that sends via the internet, and such as the digital telephone signal under the situation of wireless GSM phone.
Also have in practice and be used for carrying out to digital data multiplexing many known methods.
Data are that the form with packet sends via a kind of medium.This transmission can be carried out via connecting such as copper cash or this class physical cables of glass fibre, also can carry out via infrared ray or radio wave.
Since data send institute via medium capacity usually and bandwidth be coupled, and this bandwidth is too little usually, so through regular meeting data is compressed.Yet this often is not enough.
In addition, in these methods, have a lot of methods at be that the data of optimizing between two computers transmit.
Summary of the invention
Especially, an object of the present invention is to address these problems to small part.For this purpose, the invention provides a kind of method of multiplexing digital data, wherein with digital data packets simultaneously in the past backward and from after onwards send.In addition, the invention provides a kind of method that is used for multiplexing digital data, wherein digital data packets sends to beginning from the start of packet terminad and from end simultaneously.In addition, the invention provides a kind of method that is used for multiplexing digital data, wherein send a digital data packets simultaneously and send same grouping backward.
By data flow being divided into two simultaneous streams, provide for example between the computer and to the possibility of computer FastData, one of them stream beginning sends data in the past and advances backward, another stream then from after advance forward.In most applications, for instance, the present invention relates to use electricity or optical mode and send this data via electromagnetic wave.
Another advantage of this method is to there is no need to use other control signals or technology to rebuild whole signal or packet, also there is no need to make this two data flow phases coadaptation: signal or packet are to finish when these two streams meet or when data buffer is full of.And the delay in wherein any circuit can not cause dropout.
In many cases, the data connection is asymmetric: the capacity that promptly sends is less than the reception capacity.In the method according to the invention, although the transmission capacity is less, might use whole reception capacity.For instance, this is extremely important in the so-called streaming that carries out via the internet, and wherein the digital radio broadcasting even following TV or the video broadcasting all can be carried out via the internet.These two data flow also can enter via various circuits.For instance, a data flow can enter via telephone wire, and second data flow then can enter via cable, electrical network (electricity grit), also can enter via gsm wireless.In addition might be multiplexing and data flow is entered via a cable by means of physics.In fact the present invention provides a kind of specific digital multiplexing form thus.
Preferably, as described, the present invention relates to a kind of method, wherein first equipment sends to data one the 3rd equipment backward in the past, second equipment from after onwards identical data is sent to the 3rd equipment.As a result, the 3rd equipment can have whole data availables soon.
Preferably, the 3rd equipment is placed on data in the data buffer of a grouping size, and when buffer fills up a signal is sent to first and second equipment, or stoping to send before buffer fills up confirms.So, the coordination of being carried out between two data flow will be very simple.
In the method according to the invention, preferably, first equipment sends to data second equipment in the past backward, simultaneously data back is sent to the 3rd equipment.Under the situation of optimum utilized bandwidth, provided the possibility that all data are provided fast to these two equipment thus.Preferably, in this method, second equipment and the 3rd equipment can be forwarded to the other side from the data that first equipment receives fast with it when receiving.Therefore, these two equipment can best bandwidth and the transmission capacity of using them.
In described method, preferably, the second and the 3rd equipment has the data buffer of a grouping size, wherein receives data and is placed in the described data buffer, when corresponding data buffer filled up, first and second equipment can send a signal to first equipment.
In addition, the present invention relates to a kind of being used for sends to packet the method for first equipment in organic (being also referred to as " ad hoc ") device data network, wherein said equipment has a data processing unit, a data buffer and has the software that is used for receiving from least two transmitting apparatus of data network the reception routine of packet, wherein, at least two in the network other equipment send the complementary data grouping to first equipment simultaneously, described first equipment adds complementary data together, so that form packet.
Preferably, described software also has router, be used for those are sent to the receiving equipment that at least one links to each other with data network from the packet that one or more transmitting apparatus of data network receive, wherein said transmission does not also rely on one or more transmitting apparatus.
In addition, the present invention relates to a kind of method of receiving digital data, wherein, equipment with data storage device is created the data buffer of a digital data packets size in data storage device, and receive first digital data stream and second digital data stream simultaneously, wherein said equipment comes the padding data buffer with first digital data stream in the past backward, and from after onwards come the padding data buffer with second data flow.
Preferably, when data buffer filled up, described equipment will be informed one or more information sources of digital data stream.Therefore, described coordination is very simple.
In addition, the invention still further relates to a kind of method that sends numerical data, wherein, equipment with data storage device is created a data buffer and numerical data is kept in the data buffer in the metadata cache device, send numerical data from the front portion of data buffer and the rear portion of data buffer in addition in two streams.
Preferably, after receiving a signal, described equipment can stop to send.Therefore, described coordination is still very simple.
In addition, the invention still further relates to a kind of software, described software has the routine that is used for realizing according to wherein a kind of method of said method.
From the above description as can be known, with situation that accompanying drawing and description thereof combine under, for the expert, how relative to each other and operation all is very tangible described end needs which routine and described routine.Certainly, this software can directly be carried out in such as hardware such as PROM, EPROM.
In addition, the present invention relates to a kind of software that is used to send digital data packets, be used to send from first of first digital data stream of the anterior beginning of digital data packets comprising one and send routine, and be used to send from second of second digital data stream of the terminal beginning of digital data packets and send routine.
In addition, the invention still further relates to a kind of software that is used for the receiving digital data grouping, be used to receive first of first digital data stream comprising one and receive routine, and second reception routine that receives second digital data stream simultaneously, and comprise that one is used for beginning first digital data stream to be kept at memory and to fill first of memory backward and store routine from the memory front portion, and one be used for beginning to preserve second digital data stream and filling the second storage routine of memory forward from the memory end, comprises a routine that stops that being used for when memory fills up stopping receiving digital data in addition.
In addition, the invention still further relates to a kind of equipment that is used to send digital data packets, comprising the storage arrangement that is used to preserve digital data packets, be used to send first dispensing device of first digital data stream that starts from the storage arrangement front portion, and second dispensing device that is used to send second digital data stream that starts from the memory device set terminal.
In addition, the invention still further relates to a kind of equipment that is used for the receiving digital data grouping, comprising the storage arrangement that is used to preserve digital data packets, be used to receive first digital data stream and begin it is deposited in the first receiving device of described storage arrangement from the storage arrangement front portion, and second receiving system that is used to receive second digital data stream and begins it is deposited in described storage arrangement from the storage arrangement rear portion.
In addition, the invention still further relates to a kind of carrier and a kind of equipment with described software with described software.
In one particular embodiment of the present invention, digital data packets is that the form with bit stream sends.In another embodiment, grouping is divided into less son grouping, for instance, it is numbered 1 ..., n.If so, in first stream, son grouping is to send in proper order according to 1,2 or the like order since the first son grouping, and in second stream, sub divide into groups be from last height divide into groups to begin according to n, n-1 ... order and carry out that order sends.In another embodiment, these two groupings almost send simultaneously.These two streams can send via identical carrier, for example use conventional multiplexing technique, but also can send via diverse carrier, for example cable modem and telephone wire.Numerical data can also have other form, rather than binary system (binairy) data of using now.
Description of drawings
The present invention will be based on as the accompanying drawing of one exemplary embodiment of the present invention and obtain further instruction.Yet the present invention is not limited to described one exemplary embodiment.What show in the drawings is:
Fig. 1 is divided into two signals with a signal and on receiver these two signals is added to together,
Fig. 2 receiver receives a signal that separates from the information source of two physical separation,
Fig. 3 provides a signal to two receivers,
Fig. 4 provides a signal to three receivers,
A kind of replacement method that is used for the situation of Fig. 4 of Fig. 5,
An example that concerns between Fig. 6 bandwidth and the signal quality,
Second example that concerns between Fig. 7 bandwidth and the signal quality,
Receiving equipment of Fig. 8 A-8C,
Transmitting apparatus of Fig. 9 A-9C,
Equipment that receives and almost also send simultaneously of Figure 10 A-10D, and
Figure 11 sends and receives and handles.
Embodiment
What Fig. 1 showed is the situation that a kind of signal 5 enters receiver 3 in a usual manner.Receiver 3 is with this signal or each packet of constructing this signal is divided into two streams 1 and 2, so that it is forwarded to receiver 4.Stream 1 is the signal that sends from the front portion, this means first bit that at first sends packet or signal, sends second bit or the like then.Stream 2 is signal 5 or its packet, yet but is reverse, this means at first to send last bit, sends penult bit or the like subsequently.Therefore, because these two streams have been formed entire stream, thereby these two streams can be regarded as complementary stream.
The principle of in Fig. 1, describing also can be used on have 2 information sources 3,3 ' Fig. 2, wherein said information source sends to a receiver 4.In this case, information source 3,3 ' reception is (or having separated) signal or packet 5 all, and each information source is respectively to receiver 4 sending part sub-signals 1 or 2.This just information source 3 and 3 ' the transmission capacity provide benefit when being lower than the reception capacity of receiver 4.Receiver 4 even can comprehensively transmit signal or the packet 6 that re-constructs again.
What Fig. 3 showed is an example of the method according to this invention, and one of them information source 3 is divided into signal or packet 5 stream 1 and 2 of two complementations.One of them stream sends to receiver 4, another stream then send to receiver 4 '.These two receivers 4 and 4 ' signal that receives is sent to the other side are so that the two obtains complete signal or packet once more.This just is restricted in transmission capacity/bandwidth of 3, still/and 4 and 4 ' capacity benefit is provided when being enough to carry out exchanges data.
What Fig. 4 showed is such example, and wherein information source 3 is divided into two streams to a signal or packet 5, and stream 1 sends to receiver 4,4 ", flow 2 send to receiver 4 '.Receiver 4 ' its part signal or packet are forwarded to 4 and 4 ", and 4 with its part signal or forward a packet to 4 '.In optimal case, all receivers 4,4 ' with 4 " can receive whole signals or packet being shorter than in the time that conventional point-to-point is connected common needs, perhaps use less bandwidth simultaneously.
The example that is to use the method according to this invention that Fig. 5 shows, one of them information source 3 with finite data transmission capacity is divided into two streams 1 and 2 with a signal or packet 5.Stream 1 sends to receiver 4, flows 2 and sends to receiver 4 ", receiver 4 and 4 " with part signal be forwarded to receiver 4 '.As a result, three receivers receive whole signal or packet being shorter than to send all to send in the needed times of grouping to three receivers usually, and the bandwidth of using is also fewer.
What Fig. 6 and 7 showed is calculated examples, wherein in the situation of Fig. 6, from transmitter 3 to receiver 4 and 4 ' available bandwidth almost be identical.In this case, receiver 4 and 4 ' meeting 50% usually in case of necessity between in receive data, concerning transmitter 3, the load of bandwidth aspect only is 2 times of whole bandwidth of 50%, rather than 2 times of 100% bandwidth.Can under the situation that does not have any overhead (transmitter 3 can stop to send) when having sent all data, send numerical data fast thus.
In the calculated examples of Fig. 7, described connection is asynchronous.Total packet of receiver 4 ' reception 91%, 4 of receivers receive total packet of 11%.End product is: 3 final of transmitters need to send once total packet.In addition, in this rough sledding, there is a very little speed gain.In this case, from transmitter 3 to receiver 4 transmission capacity and from 4 to receiver 4 ' the transmission capacity.Since receiver 4 to receiver 4 ' than low transmission capacity (or delay), therefore have only 9% rather than 11% packet meeting from receiver 4 send to receiver 4 '.
What show among Fig. 8 A-8C is the processing that receives according to the present invention and to the digital data packets that is divided into two streams.In Fig. 8 A, two streams 21 and 22 are received and put it into data buffer 20.Flow automatically 21 first receive data division and be placed on position 1, flowing automatically 22 second receives data division and then is placed on position n.What Fig. 8 B showed is an intermediate steps.In this case, receive the 4th data part and place it in position 4 in the buffer, receive another (n-i) data division via stream 22 simultaneously via stream 21.Even these two streams are different fast, do not need expense yet.In Fig. 8 C, these two streams meet, and buffer fills up.This will trigger equipment to stop to receive or sending a signal that digital data packets is complete.
What show among Fig. 9 A-9C is transmitting terminal.In Fig. 9 A, data buffer 23 has filled up data.Equipment begins to obtain the data that start from data buffer 23 front portions and begins to send data from data buffer.Simultaneously, equipment begins to obtain data and begin to send data from the position n at data buffer 23 rear portions.As can be seen, through after the some time, equipment obtains data division 3 and with its transmission from data buffer 23 in Fig. 9 B.Also obtain the 5th data part simultaneously and with its transmission from the data buffer rear portion.Equipment obtains the next one and other data divisions in proper order, and therefore next data division will be the 6th the data part that is numbered 4 data division or begins from the rear portion.In Fig. 9 C, get data division to the end.It can be seen that in addition described transmission is very fast and do not have a complicated expense.
What Figure 10 A-10D showed is such a case, wherein has a kind of equipment that sends according to the present invention and receive.Specifically, data buffer 26 is empty.Equipment 28 and 29 begins to receive data division via stream, wherein flows 28 and is placed on first position, flow subsequently 28 will be in the past padding data buffer 26 backward.Will put into last position n of data buffer 26 from flowing first data division that receives 29.Subsequently, stream 29 will from after padding data buffer 26 forward, till buffer fills up.
Simultaneously, equipment begins to send data division via stream 30 and 31.Stream 30 is anterior from data buffer, flows 31 then from the data buffer rear portion.
As can be seen, in this case, described equipment will be faster than the transmission data division aspect the reception data division in Figure 10 C.In Figure 10 C, the total data part all is received: two streams 28 and 29 meet.Described equipment keeps sending via stream 30 and 31.In Figure 10 D, stream 30 and 31 meets, and equipment can stop to send.This is feasible fully under the situation of expense minimum.
In Figure 11, send and receive to handle and in a figure, describe.Equipment 40 with data buffer 24 sends two data flow 44 and 45.Equipment 41 receives these two streams as stream 46 and 47, and data are put into data buffer 43.In addition, transmitting apparatus 40 has two streams 44 and 45, and one of them stream starts from the front portion of data buffer 42, and another stream then starts from the rear portion of data buffer 42.Receiving equipment 41 receives these two streams, and one of them is banished front portion into data buffer 43, and another is banished rear portion into data buffer 43.
In this respect, for instance, the method according to this invention can be used for GSM or other cordless telephone.Session or data flow can be divided into grouping thus, can send described grouping according to the method according to this invention then.Can be used to available bandwidth in addition: each data flow can send via another frequency band, the best thus available bandwidth that uses.
It will be appreciated that, comprised above description here so that the operation of preferred embodiment is described, but this and do not mean that scope of the present invention limited.Scope of the present invention only limits by following claim.From the above description as can be known, concerning those skilled in the art, many variations all are conspicuous, and the spirit and scope of the invention have then comprised these variations.
Claims (14)
1. the method for a multiplexing digital data, wherein digital data packets has length, front-end and back-end, described digital data packets simultaneously in the past backward and from after send forward.
2. backward data are sent to the 3rd equipment according to first equipment that the process of claim 1 wherein in the past, second equipment then from after onwards same data are sent to the 3rd equipment.
3. according to the method for claim 2, wherein the 3rd equipment is placed on data in the data buffer of grouping size, and sends signal to first and second equipment when buffer fills up, or stoping to send before buffer fills up confirms.
4. backward data are sent to second equipment according to first equipment that the process of claim 1 wherein in the past, and simultaneously data back is sent to the 3rd equipment.
5. according to the method for claim 4, wherein second equipment and the 3rd equipment can directly be transmitted to the other side from the data that first equipment receives with them when receiving.
6. according to the method for claim 5, wherein the second and the 3rd equipment has the data buffer of a grouping size, wherein receive data and be placed in the data buffer, and when the respective cache device filled up, first and second equipment can send signal to first equipment.
7. one kind is used in the ad hoc data network of the equipment method to the grouping of first equipment sending data, wherein said equipment has data processing unit, data buffer and having is used for receiving from least two transmitting apparatus of data network the software of the reception routine of packets, wherein other equipment of at least two in network data sub-packet that will constitute described packet simultaneously sends to described first equipment together, wherein at least one equipment starts from the son grouping of front and obtains next height grouping in proper order, at least one equipment starts from last height grouping and order is obtained last height grouping, described first equipment lumps together these data sub-packet, so that form described packet.
8. according to the method for claim 7, wherein software also has the transmission routine that is used for those packets that receives from one or more transmitting apparatus of data network are sent at least one receiving equipment that links to each other with data network, and described software and one or more transmitting apparatus are irrelevant.
9. method that is used for receiving digital data, the equipment that wherein has storage device is created the data buffer of digital data packets size in data storage device, and receive first digital data stream and second digital data stream simultaneously, wherein said equipment uses in the past padding data buffer backward of first digital data stream, and use second digital data stream from after padding data buffer onwards, wherein said first and second streams are formed a single grouping.
10. according to the method for claim 9, wherein said equipment is notified the information source of one or more digital data streams when data buffer fills up.
11. method that is used to send numerical data, the equipment that wherein has data storage device is created data buffer in data storage device, numerical data is kept in the data buffer, and in two streams from the data buffer front portion and the data buffer rear portion begin to send numerical data, wherein first-class the past sends backward, second stream from after send forward.
12. according to the method for claim 11, wherein said equipment stops to send after receiving a signal.
13. equipment that is used to send digital data packets, comprise the storage arrangement that is used to preserve digital data packets, be used to send first dispensing device of first digital data stream that starts from the storage arrangement front portion, and second dispensing device that is used to send second digital data stream that starts from the memory device set terminal.
14. equipment that is used for the receiving digital data grouping, comprise the storage arrangement that is used to preserve digital data packets, the first receiving device that is used to receive first digital data stream and begins it is deposited in described storage arrangement from the storage arrangement front portion, and second receiving system that is used to receive second digital data stream and begins it is deposited in described storage arrangement from the storage arrangement rear portion, wherein said first and second streams are formed a single grouping, and described first-class the past send backward, described second stream from after send forward.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1017870A NL1017870C2 (en) | 2001-04-18 | 2001-04-18 | Method for inverse multiplexing. |
| NL1017870 | 2001-04-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1531807A CN1531807A (en) | 2004-09-22 |
| CN100589461C true CN100589461C (en) | 2010-02-10 |
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ID=19773256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02810155A Expired - Fee Related CN100589461C (en) | 2001-04-18 | 2002-04-18 | Method for inverse multiplexing |
Country Status (18)
| Country | Link |
|---|---|
| US (3) | US6687263B2 (en) |
| EP (1) | EP1380145B1 (en) |
| JP (2) | JP4591993B2 (en) |
| KR (1) | KR100631769B1 (en) |
| CN (1) | CN100589461C (en) |
| AT (1) | ATE339833T1 (en) |
| AU (1) | AU2002307631B2 (en) |
| BR (1) | BR0209049A (en) |
| CA (1) | CA2444344C (en) |
| DE (1) | DE60214691T2 (en) |
| DK (1) | DK1380145T3 (en) |
| EA (1) | EA005969B1 (en) |
| ES (1) | ES2274083T3 (en) |
| IL (2) | IL158438A0 (en) |
| MX (1) | MXPA03009534A (en) |
| NL (1) | NL1017870C2 (en) |
| PT (1) | PT1380145E (en) |
| WO (1) | WO2002084933A2 (en) |
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